hello i just recently bought a generic 3 bar map sensor from one6 motorsports in chicago illinois and when i bought it they told me to use the presets in the hondata smanager (s300) and use the hondata 4 bar presets and it is a straight plug and play. so i did just that and the car runs and drives fine but i have had a lean issue with my car since before that was installed but i am looking for someone who has possibly bought the same map and is able to verify that the map is working correctly with the 4 bar presets....? just didnt seem right. but it reads about -20.5 at idle which doesnt seem wrong to me.

sorry car is 97 black ex coupe- jdm itr swap

also to my LEAN issues.... i recently noticed that my wideband gauge in my car was reading waaay to lean for my liking. like 19-20:1 it only reads like that when it is at idle or at a steady throttle aka not accelerating (highway driving). the wideband is only hooked up to guage. havent wired to pcm yet. but i cannot figure out why it is running lean.... tried everything

-no vacuum leaks was tiny one in fuel regulator and got new one now anyway
-new MAP
-put new check valve brake booster line since didnt have correct one before (i was desperate to fix it lol)
-BRAND NEW rc 650cc inj with all new o-rings and manifold seals
-stock itr fuel map and had no issues before
-reset wideband to original
-stock narrowband agrees with wideband while comparing on s300 voltage compared to wideband gauge
-sometimes dies when clutch it and drops to idle
-plugs are good
-all fires right
-good timing
-no misses
-not even 2% cylinder leakge in cyl 2 and didnt even check others.
-clean oil
-clean coolant
-swapped out buddies ecu w/s300 and same setup and same problem

please help i have tried everything!!

 

bump please someone any help?

 

bump i need some help

 

A map sensor provides a voltage back to the ecu on a signal wire. This voltage tells the ecu how much vacuum or boost the car is running. As long as this voltage/data is accurate the map sensor is working properly.

If your map sensor readings seem to be spot on but the car is running lean, the ecu's fuel tables need to be modified.

If you require additional support with this mysterious map sensor, you should contact who ever you bought it from.